DESCRIPTION

· The U2044B is an integrated circuit designed for relay-controlled automotive flashers.
· It features two output stages for separate control of each vehicle side.
· Includes left and right direction indicator inputs with low control current.
· Hazard warning input simplifies hazard switch construction.
· Lamp outage is indicated by frequency doubling in direction mode.
· Can be directly connected to the battery due to extremely low current consumption.

FEATURES

· Temperature and supply voltage compensated flashing frequency.
· Frequency doubling indicates lamp outage.
· Two relay driver outputs with high current-carrying capacity and low saturation voltage.
· Minimum lamp load for flasher operation: ≥ 1W.
· Very low susceptibility to EMI.
· Protection according to ISO/TR7637/1 Level 4.
· Extremely low current consumption < 10 µA (with switches open).
· Reverse polarity protection.
· Three control inputs: Left, Right, and Hazard Warning.

APPLICATIONS

· Automotive relay-controlled flashers.
· Vehicle direction and hazard warning systems.